 | Adeli S. Geologic history of water on Mars: regional evolution of aqueous and glacial processes in the Southern Highlands, through time: Diss. ... Dr. rer. nat. / Deutsche Zentrum für Luft- und Raumfahrt, Institut für Planetenforschung, Berlin-Adlershof. - Köln: DLR, 2016. - xx, 110 p.: ill. - Res. also Germ. - Bibliogr.: p.93-110. - (Forschungsbericht; 2016-60)
- - ISSN 1434-8454
Шифр: (Pr1120/N 2016-60) 02
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Abstract ........................................................ x
Kurzfassung ..................................................... i
List of figures .............................................. viii
List of tables .................................................. x
1 Introduction ................................................. 1
a The surface of Mars ....................................... 3
i Noachian Period ........................................ 3
ii Hesperian Period ...................................... 4
iii Amazonian Period ..................................... 5
b Terra Sirenum-Terra Cimmeria .............................. 6
c Thesis organization and author contribution ............... 7
2 Data and Methods .......................................... 9
a Datasets and data processing .............................. 9
i Imagery dala and topographic data ...................... 9
ii Spectroscopy data .................................... 11
b Methods and approaches ................................... 12
i Geologic mapping ...................................... 12
ii Spectroscopic analysis ............................... 13
iii Hydraulic analysis .................................. 13
iv Crater size-frequency distribution (CSFD) ............ 13
3 Geologic evolution of the eastern Eridania basin:
implications for aqueous processes in the southern
highlands of Mars ........................................... 15
a Introduction ............................................. 16
b Data sets and methods .................................... 19
i Imagery and topography data sets ...................... 19
ii Spectroscopic data ................................... 19
iii Age determination ................................... 20
c Regionalsetting .......................................... 21
d Geological mapping ....................................... 21
i Noachian plateau ...................................... 22
1) Cratered plateau (Nplc) ............................ 22
2) Modified basement (Nplm) ........................... 25
ii Noachian-Hesperian unit ............................... 25
1) Knobby light-toned materials (NHltk) ............... 25
2) Smooth light-toned materials (NHlts) ............... 27
3) Electris deposits (NHIte) .......................... 28
iii Early Amazonian unit ................................ 31
1) Basin unit I/II (еАbI/еAbII) ....................... 31
2) Plain unit (eAp) ................................... 31
iv. Stratigraphy ......................................... 32
e Mincralogical composition of the light-toned materials ... 34
i Fe/Mg-phyllosilicates ................................. 34
ii Al-phyllosilicates ................................... 36
iii Chloride salts ...................................... 36
f Discussion ............................................... 39
i Eridania palcolake .................................... 39
ii Formation of alteration and evaporation minerals ...... 40
1) Fe/Mg-clay member of the light-toned materials ..... 40
2) Al- and Fe/Mg-clay member of the light-toned
materials .......................................... 41
3) Chloride member of the light-toned materials ....... 42
iii Post-lake geological events ......................... 43
1) Desiccation of isolated lakes ...................... 43
2) Late stage aqueous events .......................... 45
3) Volcanic events .................................... 45
iv Interpreted geologic timeline ........................ 46
g Conclusion ............................................... 48
4 Amazonian-aged fluvial system and associated
ice-related features in Terra Cimmeria, Mars ................ 51
a Introduction ............................................. 52
b Data and methods ......................................... 53
c Regional setting ......................................... 54
d Geomorphological investigation ........................... 55
i Upstream section ...................................... 55
ii Intermediate section .................................. 59
1) Bedrock unit ....................................... 60
2) Mantling unit ...................................... 61
iii Downstream section .................................. 61
1) KärünValles ........................................ 61
2) Alluvial tan ....................................... 63
e Hydraulic analysis ....................................... 65
i Flow discharge ........................................ 65
ii Sediment transport ................................... 68
iii Time scale .......................................... 68
f Discussion ............................................... 70
i The catchment system formation ........................ 70
ii Kärün Valles Formation ............................... 71
iii Source of water ..................................... 72
g Conclusion and implications .............................. 73
5 Geomorphology of ice-rich valley fill deposits in Terra
Cimmeria, Mars: Implications for Amazonian climate changes .. 75
a Introduction ............................................. 76
b Geologic background ...................................... 78
c Valley fill deposit (VFD) morphological characteristics .. 79
d Interpretation and Implications .......................... 82
6. Discussion and conclusion ................................ 85
a History of liquid water in Terra Sircnum-Terra Cimmeria .. 85
i Early Mars Paleolake .................................. 85
ii Amazonian-aged valley and channel system ............. 86
iii Recent glacial-like deposits ........................ 87
b Geologic timeline ........................................ 88
c Future work .............................................. 91
References ..................................................... 93
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